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Home >> Acura >> 2009 >> CSX Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Conventional Brake Components) >> Front Brake Disc Inspection >> Thickness and Parallelism

Thickness and Parallelism

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the front of the vehicle, and support it with safety stands in the proper locations (see LIFT AND SUPPORT POINTS )
  2. Remove the front wheels
  3. Remove the brake pads (see FRONT BRAKE PAD INSPECTION AND REPLACEMENT )
  4. Using a micrometer, measure the brake disc thickness at eight points, about 45° apart and 10 mm (3/8 in) in from the outer edge of the brake disc Replace the brake disc if the smallest measurement is less than the max refinishing limit

    Brake disc thickness: 

    Standard: 27 9-28 1 mm (1 10-1 11 in) 

    Max refinishing limit: 26 0 mm (1 02 in) 

    Brake disc parallelism: 0 015 mm (0 0006 in) max 

    NOTE: This is the maximum allowable difference between the thickness measurements
    Fig 1: Measuring Brake Disc Thickness
    G05987909Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. If the brake disc is beyond the service limit for parallelism, refinish the brake disc with a Honda-approved commercially available on-car brake lathe
    NOTE: If the brake disc is beyond the service limit for refinishing, replace it (see FRONT BRAKE DISC REPLACEMENT )
  6. Inspect the brake disc runout, see RUNOUT .